It's obviously a myth that it's easier to count in 10s! So why would anyone go metric? :-)
Ignore any tales from the UK about forcible metrication, the papers just make them up.
The Sock

I prefer binary its easier to count to one than it is to count to 10

I've started switching some of my projects over, for example the bracket I made to mount the battery isolator in my truck I measured in metric and used metric bolts since I figured everything else in the truck is metric anyway.
This didn't cost me any extra since I don't have a lot of metal working tools I was buying the tap and bolts and stuff anyway, those that have non metric stuff already would have to re-buy a lot of tools but me buying for the first time it didn't cost me any extra.
I have learned that when you do work with metal in the metric system you have to overbuild a little more. Metric bolts have a different thread pattern than SAE and it makes them weaker so you have to go up a size. Seems like one of those instances where they decied to make it different just to be different even though its not as good.

The biggest advantage and disadvantage of the metric system is the decimal part!

I'm serious! Doing math with the metric system (or even 100ths of inches like we do in machining) is great - with measuring tools

Now - I give you a sheet of paper - let's say I want you to fold it into 10ths - good luck - In the mean time, I'll give you a fraction of 2 easily (and computers like binary...)

Some of those "odd ball" measurements are "english" 10x measurements - for instance - 1 acre is 10 square chains - and 10 chains = 1/8th of a mile. At least around here, a "standard" street is 66ft wide - aka 1 chain

BTW 10 chains = 1 furlong - so one furlong X 1 chain = 1 acre, or 1 furlongx1furlong = 10 acres

It all comes down to logical devision of square miles (sections) into smaller units - or even "townships" (36 square miles)